Electronic Journal of Differential Equations,
Vol. 2009(2009), No. 63, pp. 1-7.

Title: Positive solutions for nonlinear difference equations involving
       the p-Laplacian with sign changing nonlinearity
   
Authors: Yanbin Sang (North Univ., Taiyuan, China)
         Hua Su      (Shandong Univ., China)

Abstract:
 By means of fixed point index, we establish sufficient
 conditions for the existence of positive solutions to p-Laplacian
 difference equations. In particular, the nonlinear term
 is allowed to change sign.
 
Submitted December 16, 2008. Published May 08, 2009.
Math Subject Classifications: 39A10.
Key Words: Difference equations; p-Laplacian; fixed point index;
           sign changing nonlinearity.